抱歉，但这将是一个“如何”问题，而不是一个技术问题。我对 C# 和 Json 的使用非常陌生。我有一个 CSV 文件，如下所示：
编辑 - 我确实设法在这里找到一些代码 - https://qawithexperts.com/article/c-sharp/convert-csv-to-json-in-c/465 - 不确定这是否适合我目标，因为它似乎是一个简单的转换。
Time Control_Code Metric Organisation Value DateTime
2018-10-21T00:08:03 JKX 3721 AD450 20 2018-10-21T00:08:00
2018-10-21T00:08:03 JKX 1234 HG650 88 2018-10-21T00:08:00
我需要从该 csv 生成多个 JSON 输出文件，格式示例如下：
{
"Time":"2018-10-21T00:08:03",
"Control_Code": "JKX",
"metrics": [
{
"Metric": 3721,
"Organisation":"AD450",
"Value": 20,
"Datetime":"2018-10-21T00:08:00"
},
{
"Metric": 1234,
"Organisation":"HG650",
"value": 88,
"datetime":"2018-10-21T00:08:00"
}
]
}
现在，除此之外的额外问题是，需要每个 Json 只能使用一个 Control_Code。 生成的每个 Json 必须包含一个 Control_Code 以及指标数组中的所有相关指标值。因此，需要扫描 csv 中的每个不同的 Control_Code，然后为该特定 Control_Code 生成输出，然后对任何后续 Control_Code 执行相同的操作。
因此，例如，将使用不同的 Control_Code（来自同一 csv 文件）生成不同的 Json - 示例（注意不同的 Control_Code 其他值当然也会改变，但仅提供示例）。
{
"Time":"2018-10-21T00:08:03",
"Control_Code": "BHY",
"metrics": [
{
"Metric": 3721,
"Organisation":"AD450",
"Value": 20,
"Datetime":"2018-10-21T00:08:00"
},
{
"Metric": 1234,
"Organisation":"HG650",
"value": 88,
"datetime":"2018-10-21T00:08:00"
}
]
}
感谢您提前提供任何建议/信息。
This is how excel files converts in to JSON. hope you can use it.At the end I added my GitHub solution URL. if any doughts, please refer it
public class CityReader
{
private readonly ILogger<CityReader> logger;
private readonly IConfiguration configuration;
public CityReader(ILogger<CityReader> logger, IConfiguration configuration)
{
this.logger = logger;
this.configuration = configuration;
}
public void Read()
{
string filePath = configuration.GetValue<string>("File:City");
using (var stream = File.Open(filePath, FileMode.Open, FileAccess.Read))
{
// Auto-detect format, supports:
// - Binary Excel files (2.0-2003 format; *.xls)
// - OpenXml Excel files (2007 format; *.xlsx, *.xlsb)
using (var reader = ExcelReaderFactory.CreateReader(stream))
{
// 2. Use the AsDataSet extension method
var result = reader.AsDataSet(new ExcelDataSetConfiguration()
{
ConfigureDataTable = (tableReader) => new ExcelDataTableConfiguration()
{
FilterRow = (rowReader) =>
{
int progress = (int)Math.Ceiling(rowReader.Depth / (decimal)rowReader.RowCount * 100);
// progress is in the range 0..100
return true;
},
UseHeaderRow = true
}
});
// The result of each spreadsheet is in result.Tables
int count = 0;
List<CityViewModel> cities = new List<CityViewModel>();
foreach (DataTable table in result.Tables)
{
foreach (DataRow row in table.Rows)
{
var id = row.Field<double>(0);
var districtId = row.Field<double>(1);
var name = row.Field<string>(2);
var postcode = row.Field<double>(3);
var latitude = row.Field<double>(4);
var longitude = row.Field<double>(5);
logger.LogInformation("id: {0}, districtId: {1}, postcode: {2}, latitude: {3}, longitude: {4} ", id, districtId, postcode, latitude, longitude);
var city = new CityViewModel
{
//Id = Convert.ToInt32(id),
DistrictId = Convert.ToInt32(districtId),
IsActive = true,
Name = name,
PostCode = postcode.ToString(),
Latitude = (float)latitude,
Longitude = (float)longitude
};
cities.Add(city);
}
}
var json = JsonConvert.SerializeObject(cities, Formatting.Indented);
string path = Path.Combine(
Directory.GetCurrentDirectory(),
configuration.GetValue<string>("File:Results"),
"cities.json");
logger.LogInformation("Writing countries to {0}", path);
File.WriteAllText(path, json);
}
}
}
}
public Task StartAsync(CancellationToken cancellationToken)
{
_logger.LogInformation("Starting IHostedService registered in Startup");
cityReader.Read();
return Task.CompletedTask;
}
public Task StopAsync(CancellationToken cancellationToken)
{
_logger.LogInformation("StoppingIHostedService registered in Startup");
return Task.CompletedTask;
}